Methods of Rock-dusting American Coal Mines PDF Download
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Author: J. J. Forbes
Publisher:
ISBN:
Category : Coal mines and mining
Languages : en
Pages : 26
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Book Description
Author: J. J. Forbes
Publisher:
ISBN:
Category : Coal mines and mining
Languages : en
Pages : 26
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Book Description
Author: C. H. Gaddis
Publisher:
ISBN:
Category : Cylas formicarius
Languages : en
Pages : 14
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Book Description
Author: Communicable Disease Center (U.S.)
Publisher:
ISBN:
Category : Communicable diseases
Languages : en
Pages : 494
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Book Description
Author: Sander Bot
Publisher: Bloomsbury Publishing
ISBN: 139940248X
Category : Nature
Languages : en
Pages : 401
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Book Description
The most complete photographic field guide to hoverflies of Britain and North-west Europe ever written. An essential part of our eco-systems, hoverflies are the second most important pollinators after bees but sadly, more than a third of all European species are now under threat of extinction. Written by two leading experts, Hoverflies of Britain and North-west Europe is the first and only photographic field guide to cover all 400 hoverfly species occurring in Britain and neighbouring countries in such detail. Each species account contains a description, population status, ecology and habitat, an up-to-date map of its distribution across North-western Europe, a flight time diagram and guidance on differentiating similar species. There are also detailed illustrations and stunning full-colour macro photographs in each account, showing key features of the species to aid accurate identification. This is the ultimate photographic field guide to hoverflies, and a perfect introduction into the world of these important pollinators, both for amateur and expert entomologists alike.
Author:
Publisher:
ISBN:
Category : Mines and mineral resources
Languages : en
Pages : 472
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Author: Daniel Harrington
Publisher:
ISBN:
Category : Explosions
Languages : en
Pages : 8
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Author: M. R. McKenzie
Publisher:
ISBN:
Category : Gold ores
Languages : en
Pages : 1336
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Book Description
This paper describing the milling methods at the Walkermine concentrator, Plumas County, Calif., is one of a series being prepared by the United States Bureau of Mines on milling methods and costs in the various mining districts throughout the United States
Author:
Publisher:
ISBN:
Category : Coal
Languages : en
Pages : 498
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Author:
Publisher:
ISBN:
Category : Agriculture
Languages : en
Pages : 1048
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Author: John Chambers McDowell
Publisher:
ISBN:
Category : Dairy cattle
Languages : en
Pages : 674
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